"...........AMP COMES ON........ALL 4 CHANNELS PLAY...........WHEN YOU TURN UP THE AMP HAS A WHINE......THINK IT IS IN THE VOLUME KNOB............HAD AMP HOOKED UP IN MY CAR..............WHEN YOU TURN DOWN THE VOLUME THEN NO WHINE.........." i got this amp quoted above to hopefully make on...

any idea if i can order a button like that?

pieces that came off



item is in center of these pics, its a push button type slide

i will send pics, is the crossover board the small board that sits on top of the main board?

if it needs a scope i think i have a place i can take it to.

also when i took the upper board assembly off the "X10" push button popped off, and two little copper pieces came out. i see the slide "IC" it came off of, but im not sure if im gonna know how they fit together and work.

any info on that would be helpful too!

ok i will find something to get them off. and i googled how to check the diodes. but i geuss i need to find out how to check the transistors.
that will be tonights project.

i went to that site to. looks like they have everything to repair circuits!

got all the heatsinks screws out and the smaller section of the heat sink is off. but the half with a ton of screws on the side of the heat sink plate. how do i get these off? a very small wrench and time?

and i have the meter u said i need. thanks

incase i need some of these components. where is the best place, does radio shack even keep things like caps etc. anymore

got the board off, i was halfway there last night but didnt want to mess it up. ok so remove the heatsinks carefully, with the bolts that are in the center of the individual heat sinks, bolts look like the nut driver type, and then the transistors are to be pried off lightly. then i will be able to ...

ok, i saw a few but did know if i had to take the heatsinks off first.
then i need to find the circuits for each channel and test the components.
transistors first?

how were those damaged traces fixed?

here she is

thanks alot. i love my zx475 and want it fixed. and im handy enough to do it. but i never tried to fix an amp before. if i can fix copiers, i can fix an amp, i hope LOL

i will take some tonight.
are there any sites that might carry the schematics on these?

i have i apart and ready to test, but i havent troubleshoot circuits like this since '99 LOL
all the leds that are visable come on except the 3 on top, but i see that is very common

how do i get to them and by what means do i test them. the heat sinks need to be taken off right?

i believe my front left channel is dead. and i wanted to know what are the basics of troubleshooting an amp. i have a 30amp power supply and a nice voltmeter. i read something about measuring the current and voltage on each channel. i get less than .04 volts on each when powered up. rear channels bo...

what was your experience. turn around time once they got it, did they let u know they got it? thanks

also what should my power supply be rated to test amps in house?

i have a zx475 that is having some front channel issues. rear plays fine. i see this is a common issue. i have a background in elec and the time to try and fix it. if i fail does Rodin still offer the flate rate repair service?